every reason to believe that congress will grind to a halt under the threat that president obama will rewrite its handiwork. >> would you argue that that is indeed happening right now? as you try to work out differences between various perspectives on a piece of legislation, those who may be asked to give something that they think the president agrees with them on might say, why should i give on that? i can get that changed or done unilaterally by the executive branch. or the party that wants to achieve that says, why should i agree to it? >> you could imagine such a negotiation about the effective date of obamacare. after the statute is passed, president obama decides that the effective date is regardless of what congress wants. >> mr. turley, the constitution's system of separated powers is not simply about stopping one branch of government usurping another. it is about protecting the liberty of americans from the dangers of concentrated government power. how does the president's unilateral modification of acts of congress affect both the balance of power between the political branc